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(No Model.) 4 Sheets-Sheet 1'.

F. PHILLIPS.

PLANING MACHINE GUSHIONING DEVICE.

No. 350,554. Patented 051.. 12, 1886.

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(No Model.) 4 Sheets-Sheet 2. P. PHILLIPS. V PLANING MACHINE GUSHIONINGDEVICE. No."350,554.

Patented Oct. 12, 1886.

(No Model.) 4 Sheets-Sheet 3.

F. PHILLIPS.

PLANING MACHINE GUSHIONING DEVICE.

No. 350,554. Patented oot. 12, 1886.

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(No Modl.) 4 Sheets Sheet 4.

P. PHILLIPS.

PLANING MACHINE UUSHIONING DEVICE.

No. 350,554; Patented Oct. 12, 1886.

FIG.

. T TEST. 'INVENTOR- UNITED STATES PATENT OFFICE.

FRANKLIN PHILLIPS, OF NEWARK, NEW JERSEY, ASSIGN OR OF THREE- FOURTHS TOEDWARD L. PHILLIPS, GEORGE H. PHILLIPS, AND \VILLIAM E. PHILLIPS, ALL OFSAME PLACE.

PLANlNG MAcHlNE CUSHIONING DEVICE.

SPECIFICATION forming part of Letters Patent No. 3 0, dated October 8Applicationfilcd January 26, 1886. Serial No. 189,814. (No model.) P

To all whom it may concern.-

Be it known that I, FRANKLIN PHILLIPS, a citizen of the United States,residing in Newark, Essex county, New Jersey, have invented 5 certainnew and useful Improvementsin Gushioning Devices for IronPlaningMachines, fully described and represented in the following specificationand the accompanying drawings, forming a part of the same.

This invention relates to that class of machines in which a casting ofany desired form is secured upon a movable bed and traversedlongitudinally beneath a cutting-tool, the rate of movement toward thetool being limited,as

I 5 from twelve to twenty feet per minute,aceording to the hardness ofthe iron and the endurance of the tool which operates uponit.

There is, however, no necessary limit to the speed of the table and itsattached casting in the reverse direction, except the difficulty ofarresting the motion of the table at the end of its stroke withoutinjury to the reversing mechanism; and the object of the presentinvention is to connect a spring or air cushion adjustably to the table,so as to gradually check the motion of the latter before the reversingmechanism is fully actuated. As the reversing mechanism in such machinesis usually actuated by a direct connection with 0 the moving table, itis obvious that a diminution in the speed of the table before thereversing mechanism is operated will entirely obviate the difficultywhich arises in actuating the table with a quick return motion and op- 5crating the reversing. mechanism by direct connection thereto.

In the annexed drawings several constructions of equivalent characterare shown for connecting the air or spring cushion adjust- 0 ably withthe planer-table, so that the latter may be traversed a greater or lessdistance beneath the tool and arrested by the cushion at the end of therequired stroke.

Figure 1 is a side elevation of a planer-bed 5 with part of thestanchions and the crosshead carrying the cutting-tool, one end of theplaner-table being shown carrying a cylinder adjusted upon the same incontact with the tool. Fig. 2is an end elevation of the same parts. Fig.3 is a transverse section of the bed and table on line a: w in Figtl.Fig. 4 is a side elevation of part of the bed and table, showing thecushioneylinder pivoted to oscillate upon the bed and connected with thecushion-rod by a jointed arm. Fig. 5 is a similar elevation showing thecushion-cylinder actuated by a bell-crank adjusted between twoseparately-jointed beltshifting toes, and Fig. 6 is a similar sideelevation showing the piston-rod of the cushion-cylinder provided 6 7with rack-teeth and actuated by a toothed segment. Fig. 7 is a similarside elevation showing a cylinder mounted upon a longitudinallymovablecarriage and actuated against stationary pistons by means of adjustabledogs and 6 a lug projected from the cylinder in their path.

In Figs; 4, 5, and 7 the cushion-cylinder is represented in section toshow itsinternal construetion.

Referring to Figs. 1, 2, and 3, A is thefixed 7o planer-bed; B, thetable supported movably thereon by the VS 0, in the usual manner, and Da bevel-wheel (shown upon the side of the bed in Fig. 1) fortransmitting an alternating rotary motion to suitable cog-wheels inesh-7 ing with the tableraek outside the bed. Such cog-wheels arenot shownherein, as their operation in impartinga reciprocating motion to the bedis already well known. The bevel wheel D is rotated by a pinion, F, andoperated by suitable belts and pulleys to reverse its ro tations, in theusual manner, at each stroke of the table. E is a pulley-shaft carryinga pinion, F, to drive the wheel D. O are bearings for said shaft; H Hare belt-pulleys upon the shaft for moving the table toward thecutting-tool, and I I are pulleys for driving the table in the oppositedirection with a quick return motion. J are the stanehions supporting across-head, J, above thetable, and Kis a 0 saddle sustaining the tool Ladj ustably thereon. A rock-shaft, a, carrying a reversingfrog providedwith toes b and c, is fixed upon the side of the bed adjacent to theedge of the table, and dogs (1 e are secured adjustably to 5' the-edgeof the table by bolts (1 and e, in the usual manner. The frog isprovided with a crank-arm, f, by which it is connected with thebelt-shifter guides g g. the guide actuating the belt upon the pulleysHH, and the guide 9' the belt upon the pulleys I I. The dogs 0 and (Ioperate alternately upon the reversing-toes c and b, the toes being soproportioned that in each case the dog rides over the a lug formed uponthe cushion-rod and projected in the path of the dogs (I and c, the lugbeing arranged between the toes I) and c and the planer-bed, so as tointercept one or both of the dogs before it comes in contact with thecorresponding toe of the reversing-fro As shown in Fig. 1, the table isrepresented as moving backward, as per arrow 9', with a quick returnmotion, and the dog 6 is shown in contact with the lug and about toactuate the cushion before striking the reversing-toe b. The piston N isrepresented near the middle of the cushion-cylinder, and an air-cock, f,is shown applied near each end of the latter, to regulate the dischargeof air therefrom when required, to moderate the resistance of thecushion, and holes a are formed in the cylinder near the middle of itslength, to supply air to the same when the piston uncovers them to renewthe resistance of the cushion. It is obvious with this construction thatthe cash? ion operates effectively through the rod 0, lug I, andreversing-dog e to check the rapid motion of the planer-table B at orbefore the time that the reversing mechanism is operated, and thus notonly avoids too quick an actuation of the latter and consequent injuryto the reversing devices, but entirely relieves the reversingbelt orother device employed from the work of arresting the momentum of thetable. It is also obvious that with an elastic cushion the forcerequired to compress the cushion is utilized effectively in starting theplaner-table in the reverse direction. It is also obvious that a cushiondevice connected with the planertable through any other medium than thedog that actuates the reversing mechanism would require to be separatelyand accurately adjusted every time the reversing-dog was shifted,- orthe planer-table might be cushioned and its motion arrested before thereversing device was fully operated; or the cushion might not operateuntil the reversing mechanism had been already actuated at too rapid aspeed by' the unarrested table. The advantage is therefore very obviousof combining the agent which aetuates the cushion with the same elementwhich operates the reversing mechanism, as is effected herein in thereversing-dog d or c. It is also obvious that both the reversing-dogsmay be constructed to operate in turn upon the lug P, so as to utilizethe cushion at each end of the tables stroke, and that such alternateactuation of the lug in opposite directions would shift the piston Nalternately to ward opposite ends of the cylinder M, thus drawing in afresh supply of air to the opposite end of the cylinder for thesucceeding cushion movement; but in case such actuation of the cushionis not desired upon the forward cutting movement of the table thecushionrod 0 may be returned to its initial position by a spring, a, asshown in Fig. 4. Such. spring may be applied to the cushion-rod or tothe piston within the cylinder, and may be used exclusively to form thecushion, or,in connection with an air-piston, merely to return thepiston to its operative position.

In Figs. 1 to 3, inclusive, the cushion-cylinder M is arranged nearly ina line with the upper ends of the toes b c, and the dog (1 is thereforeoffset from the edge of the table, as shown in Fig. 2, to pass by thecylinder; but in Figs. 4 to 6, inclusive, the cushion-cylinder or springis located lower upon the side of the bed A, so as not to interfere withthe ordinary arrangement of the dogs each in a line with one of the toesb or Thus in Fig. 1 the cushion-cylinder is shown pivoted to the bed atits rear end by a joint, Q, and the cushion-rod N is connected theretoby a vibrating arm, Q, and link Q Instead of an air cushion, as in Fig.1, a spiral spring, a, is iuclosed within each end of the cylinder, andoperates to shift the cushion-rod N after it has been compressed by thedog 0; and a are holes for the air to escape. The dog is shown in thisfigure in contact with the lug 1 and the toe b, and the cushion istherefore partly compressed.

In Fig. 5 the cushion-cylinder Mis pivoted vertically to the bed A, andinplace of a cushion-rod and lug, P, to intercept the moving dogs, abell-crank is connected. with the pis ton-rod N by one arm, It, and theother arm, R, is projected in the path of the dogs between twoseparately-pivoted toes, I) c. In Fig. 6 similar separate toes, Ir 0',are shown connected together and to the belt-guides by linksff, and thecushion device is connected with the dogs d c by a lever, S, a segment,T, and a rack, U. The upper end of the lever projects in the path of thedogs like the lug l in Fig. 1, and its lower end is provided with thetoothed segment T,to actuate a rack, U. This rack is formed on themiddle of a cushion-rod, N, which is fitted to guides O, and is providedat opposite ends of the rack with collars V, to press against two spiralsprings, W, which abut against the guides O. The springs resist theimpact of the dogs operating in opposite directions, and tend to holdthe lever S normally in a central position, like the spring a in Fig.4:. e

In Fig. 7 the adjustable dogs are arranged to move a eushion-cylinder,r, longitudinally with a carriage, s, which is held movably upon aslide, t, affixed to the bed. Alng, a, projects from the cylinder in thepath of the dogs, and their impact with such lug thus shifts the entirecylinder and carriage longitudinally in a manner equivalent to themovement of the bar N in Fig. 1. Stationary pistons w are affixed to thebed in a line with the bore of said cylinder, and the latter is formedwith a central partition, 22, to confine the air therein, so that whenthe cylinder is moved toward either piston the air in the cylinderoperates as a cushion to arrest the movement of the cylinder, and,indirectly, of the table B. It will be seen that this construction is aninversion of that containing a stationary cylinder and movable piston,as shown in Fig. 1.

Air-vents may be provided in the cylinder, but are not herein shown, asthey are common in such constructions and form no part of my presentinvention.

I have shown in another copending application, No. 189,815, a slidingcarriage actuated by a rotating toothed disk or wheel, but havenotclaimed therein the combination of such sliding carriage andreversing-dogs, as the bars N and N shown in Figs. 1 and 6 herein,aswell as the carriage 8, shown in Fig. 7, are an entire equivalent forsuch carriage.

WVith any of the constructions shown the motion and speed of theplaner-table are arrested as desired, the constructions all serving tooperate at both ends of the stroke and in connection with either of thereversingdogs. A single cushion device is thus made to operate inopposite directions at both ends of the tables stroke, and the extent of.the latter can also be varied in the usual manner without deranging theadjustment of the cushion, which, when once effected by the builder, isadapted'to any strokeof the planer-table. Means for varying theresistance of the springcushion may, however, be provided to compensatefor wear, as in the screw thread formed upon the rod N 3 within thecollars .V in Fig. 6. The collars are thus adapted to press more or lessupon the springs \V, and are held in their desired adjustment by jamnutsh.

From the above description it will be seen that my invention does notconsist in applying a spring-buffer at each end of a reversingtable, asthat has been done before when a uniform stroke of the table wasdesired.

My invention differs from such construction in having a cushion deviceactuated-by an adjustable shifting device, as'dog (l or e, and inthereby securing an automatic actuation of the cushion at the end of thestroke, whatever its extent may be.

Having shown'several means for practicing my invention, I do not limitmyself to the precise construction shown herein, but claim myimprovement as follows:

1. The combination, with a reciprocating shorter, substantially as shownand described.

2. The combination, with a moving table and stationary bed, of a slidingcarriage movable upon the bed, adjustable dogs upon the table to shiftthe carriage, and a cushion mechanism applied to the carriage andoperated by the longitudinal movement of the latter, substantially asdescribed:

3. The combination, with a planer-table, of dogs (I and e, attached tothe table, toes actuated by the dogs to reverse the table-drivingmechanism at opposite ends of the stroke, and a cushion device actuatedby one or both of the dogs in advance of the reversing mechanism, as andfor the purpose set forth.

4. The combination, with a planer'table, of dogs (I and 6, attached tothe table, toes actuated by the dogs to reverse the table-drivingmechanism at opposite ends of the stroke, and a-cushion device having alug or arm .projected in the path of the dog at one sideof thereversing-toe, substantially as shown and described.

5. The combination, with a planer-table, of dogs d and 0, attached tothe table, toes actuated by the dogs to reverse the table-drivingmechanism at opposite ends of the stroke, and a cushion device actuatedby one or both of the dogs in advance of the reversing mechanism, andmeans for adj usting the resistance of the cushion when actuated by thedog, substantially as shown and described;

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

FRANKLIN PHILLIPS.

Witnesses:

JAMES A. THOMSON, THOS. S.-ORA.NE.

